Limited to 28 pieces worldwide. The Tourbillon is the most emblematic watch complication in existence. It compensates for the effects of gravity to improve the functioning of a timepiece. Roger Dubuis has taken on a pioneering role by developing a double Tourbillon with differential for even greater reliability. This horological trapeze act ensures optimal performance. Gray rhodium-plated dial, black Roman numerals, rhodium-plated, engraved Arabic numerals and retrograde minute-circle White gold appliques and double Tourbillon ring - manual wind Caliber RD01 - with 48 hour power reserve Power reserve indicator on the caseback Water resistant to 50 meters / 165 feet